IfcFaceOuterBound

Natural language names

Semantic definitions at the entity

Entity definition

Definition from ISO/CD 10303-42:1992: A face outer bound is a special subtype of face bound which carries the additional semantics of defining an outer boundary on the face. No more than one boundary of a face shall be of this type.

NOTE Corresponding STEP entity: face_outer_bound. Please refer to ISO/IS 10303-42:1994, p. 139 for the final definition of the formal standard.

HISTORY New class in IFC Release 1.0

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	A
IfcRepresentationItem
IfcTopologicalRepresentationItem
IfcFaceBound
1	Bound	IfcLoop	[1:1]	The loop which will be used as a face boundary.	X
2	Orientation	BOOLEAN	[1:1]	This indicated whether (TRUE) or not (FALSE) the loop has the same sense when used to bound the face as when first defined. If sense is FALSE the senses of all its component oriented edges are implicitly reversed when used in the face.	X
IfcFaceOuterBound

Formal representations

XSD Specification

 <xs:element name="IfcFaceOuterBound" type="ifc:IfcFaceOuterBound" substitutionGroup="ifc:IfcFaceBound" nillable="true"/>

 <xs:complexType name="IfcFaceOuterBound">

  <xs:complexContent>

   <xs:extension base="ifc:IfcFaceBound"/>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcFaceOuterBound

 SUBTYPE OF (IfcFaceBound);

END_ENTITY;

 EXPRESS-G diagram

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